| 1. | This rifting continued until sea-floor spreading began 83 Ma.
|
| 2. | Around 150 Ma sea-floor spreading propagated northward into the southern segment.
|
| 3. | The existence of oceans is critical to sea-floor spreading and subduction.
|
| 4. | Around 110-85 Ma, there was worldwide oscillatory increases in ocean floor spreading rates.
|
| 5. | It seems an inevitable conclusion that sea-floor spreading could have occurred during the earliest history of Mars,
|
| 6. | Various estimates date the propagation of sea-floor spreading in this segment to the period 120 96 Ma.
|
| 7. | Convection currents in the sub-lithospheric mantle are the driving mechanisms that caused sea floor spreading to occur.
|
| 8. | A rift valley, caused by sea-floor spreading, runs adjacent and parallel to the Knipovich Ridge.
|
| 9. | This worldwide regression marks the slowing of sea-floor spreading and bounds the Gulfian Series in a sequence boundary.
|
| 10. | The collision caused an extrusion of Indochina relative to South China, which resulted in crustal extension and sea floor spreading.
|
मोबाइल